System Operation
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The EGR system reduces the peak combustion temperatures and NOx emissions by 90 %. All of the engine EGR comes from the right exhaust manifold. EGR gases pulled from a single bank instead of both sides of the engine, reducing the plumbing required. It also eliminates airflow balance issues that can occur when using EGR gases from two cylinder banks.
The EGR system also has a bypass feature that skips the EGR cooler to allow the engine to warm up faster.
The EGR system uses two EGR coolers, but it introduces a hot-side valve at the front of the first cooler that controls the volume of air allowed into the system instead of using a conventional cool-side valve behind the second cooler.